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External Wall Insulation (EWI) Systems | Boards & Fixings

Our comprehensive range of External Wall Insulation (EWI) systems includes everything you need to insulate and finish exterior walls on new builds or retrofit projects. EWI improves thermal efficiency, reduces energy bills, and enhances external appearance — all while meeting modern building regulations.

✅ EPS, mineral wool & PIR insulation boards
✅ Basecoats, mesh, primers, and dash receivers
✅ Compatible with silicone, acrylic & monocouche render finishes
✅ Full range of mechanical fixings, beads, and accessories
✅ Suitable for domestic, commercial, and refurbishment projects

Our EWI products are trusted by installers, rendering contractors, and self-builders across the UK. Whether you're working on a small extension or a large-scale development, we supply everything required for a professional and long-lasting system.

✔️ Supports U-value compliance
✔️ Improves thermal performance and weather resistance
✔️ Nationwide UK delivery on all EWI materials

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25mm EPS in 2 Sizes!

£3.56 - £7.68
£3.56 - £7.68
£3.56 - £7.68
£3.56
In stock

25mm EPS 1200x600mm & 1200 x 2400mm  Experience the versatility and durability of our 25mm EPS insulation boards, designed for external wall a...

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£3.56 - £7.68
£3.56 - £7.68
£3.56 - £7.68
£3.56

50mm EPS 1200x600mm

£4.74 - £4.74
£4.74
£4.74 - £4.74
£4.74
In stock

EPS is the most popular product used in external wall insulation. It is a cost effective yet durable product and is lightweight, non-toxic, and is ...

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£4.74 - £4.74
£4.74
£4.74 - £4.74
£4.74
Save 17% Save %

Rockwool External Wall Dual Density Slab 1200 x 600 x 80mm | EWI Insulation Board

£18.00
£18.00 - £18.00
£18.00
£14.95
£14.95 - £14.95
£14.95
In stock

The Rockwool Dual Density Slab (1200 x 600 x 80mm) is a high-performance stone wool insulation board specifically engineered for use in external wa...

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£18.00
£18.00 - £18.00
£18.00
£14.95
£14.95 - £14.95
£14.95
Save 17% Save %

PIR Insulation Board 2400 x 1200 (ALL SIZES)

£28.20 - £74.98
£28.20 - £74.98
£28.20 - £74.98
£28.20
In stock

Mannok Therm Roof / MR PIR insulation is high performance, fibre free board, with a rigid thermoset insulation core faced on both sides with a low ...

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£28.20 - £74.98
£28.20 - £74.98
£28.20 - £74.98
£28.20

90mm EPS 1200x600mm

£7.20 - £7.20
£7.20
£7.20 - £7.20
£7.20
In stock

EPS is the most popular product used in external wall insulation. It is a cost effective yet durable product and is lightweight, non-toxic, and is ...

View full details
£7.20 - £7.20
£7.20
£7.20 - £7.20
£7.20

70mm EPS 1200x600mm

£6.00 - £6.00
£6.00
£6.00 - £6.00
£6.00
In stock

EPS is the most popular product used in external wall insulation. It is a cost effective yet durable product and is lightweight, non-toxic, and is ...

View full details
£6.00 - £6.00
£6.00
£6.00 - £6.00
£6.00

DIPK 10/80/100 (Box of 200) Fixings

£60.00 - £60.00
£60.00
£60.00 - £60.00
£60.00
In stock

Discover the Power of DIPK 10/80/100 Fixings Enhance your construction and renovation projects with the DIPK 10/80/100 Fixings. This box o...

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£60.00 - £60.00
£60.00
£60.00 - £60.00
£60.00

DIPK 10/40/60 (Box of 200) Fixings

£48.00 - £48.00
£48.00
£48.00 - £48.00
£48.00
In stock

Enhance Your Fixing Solutions with DIPK 10/40/60 (Box of 200) Introducing the fischer drive anchor DIPK 10, a cutting-edge fastening solut...

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£48.00 - £48.00
£48.00
£48.00 - £48.00
£48.00

DIPK 10/100/120 (Box of 200) Fixings

£60.00 - £60.00
£60.00
£60.00 - £60.00
£60.00
In stock

Introducing the DIPK 10/100/120 Fixings - Box of 200 Upgrade your construction and insulation projects with the DIPK 10/100/120 F...

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£60.00 - £60.00
£60.00
£60.00 - £60.00
£60.00

DIPK 10/10/30 (Box of 200)

£42.00 - £42.00
£42.00
£42.00 - £42.00
£42.00
In stock

Versatile and Reliable DIPK 10/10/30 Drive Anchor The DIPK 10/10/30 Drive Anchor is the ultimate solution for all your anchoring needs. Th...

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£42.00 - £42.00
£42.00
£42.00 - £42.00
£42.00

DIPK 10/60/80 (Box of 200) Fixings

£54.00 - £54.00
£54.00
£54.00 - £54.00
£54.00
In stock

DIPK 10/60/80 (Box of 200) Fixings Introducing the DIPK 10, a premium drive anchor designed for superior performance and versatility in co...

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£54.00 - £54.00
£54.00
£54.00 - £54.00
£54.00
Rating
Write a Review
Marc Scott
April, 2025
Very handy having such a well stocked yard so close to my home, the staff are all very knowledgable and always keen to help and prices are good. ⭐️⭐️⭐️⭐️⭐️ operation 👌. - scotbeds
Ryan McGowan
March, 2025
sales girl Leighsa was really helpful with fast delivery
D
March, 2025
Outstanding customer care. I placed a small order (60£ timber) from Fife and paid with Apple Pay. Unfortunately the site defaulted to their normal own delivery service which is for an unlimited volume so good value for larger orders, but would have been too expensive for a small order like mine. I hadn’t seen this until the order went through (entirely my fault). I had thought to cancel and the weekend office team were very kind and understanding about this. We agreed I would call them in the week to arrange this. But Alan and the Alter team phoned me back a day later and said they had researched courier costs and would be happy to do that instead - which saved a huge amount of hassle on a product that was out of stock in most places locally and made the whole order very reasonable. They also refunded me the difference. Way above and beyond for a small customer - can’t recommend them enough and will be using them for more timber needs in the future.
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